EP3001483B1 - Secondary battery pack containing connector with non-projecting structure - Google Patents

Secondary battery pack containing connector with non-projecting structure Download PDF

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Publication number
EP3001483B1
EP3001483B1 EP14800504.4A EP14800504A EP3001483B1 EP 3001483 B1 EP3001483 B1 EP 3001483B1 EP 14800504 A EP14800504 A EP 14800504A EP 3001483 B1 EP3001483 B1 EP 3001483B1
Authority
EP
European Patent Office
Prior art keywords
secondary battery
connector
battery pack
pcm
pcb
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP14800504.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3001483A4 (en
EP3001483A1 (en
Inventor
Tae Wook Kim
Hyung Ku Yun
Dong Cheol Lee
Ho Chol Nam
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Chem Ltd
Original Assignee
LG Chem Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LG Chem Ltd filed Critical LG Chem Ltd
Publication of EP3001483A1 publication Critical patent/EP3001483A1/en
Publication of EP3001483A4 publication Critical patent/EP3001483A4/en
Application granted granted Critical
Publication of EP3001483B1 publication Critical patent/EP3001483B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/574—Devices or arrangements for the interruption of current
    • H01M50/581—Devices or arrangements for the interruption of current in response to temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0436—Small-sized flat cells or batteries for portable equipment
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/117—Inorganic material
    • H01M50/119—Metals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/121—Organic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/547—Terminals characterised by the disposition of the terminals on the cells
    • H01M50/55—Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/564—Terminals characterised by their manufacturing process
    • H01M50/566—Terminals characterised by their manufacturing process by welding, soldering or brazing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2200/00—Safety devices for primary or secondary batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2200/00—Safety devices for primary or secondary batteries
    • H01M2200/10—Temperature sensitive devices
    • H01M2200/103—Fuse
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2200/00—Safety devices for primary or secondary batteries
    • H01M2200/10—Temperature sensitive devices
    • H01M2200/106—PTC
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the present invention relates to a secondary battery pack including a non protruding connector and, more particularly, to a secondary battery pack including a battery cell having a cathode terminal and an anode terminal formed on one surface including a sealed portion to seal the battery cell and a protection circuit module (PCM) including a protection circuit board (PCB) having a protection circuit formed thereon, an external input and output terminal electrically connected to the protection circuit, a connector electrically connected to the external input and output terminal, and an electrically insulative PCM case in which the PCB is mounted, wherein the PCM is loaded on the sealed portion in a state in which the PCM is electrically connected to the battery cell and the connector is formed on the PCM such that the connector does not protrude outward from the secondary battery pack.
  • PCM protection circuit module
  • PCB protection circuit board
  • the secondary batteries may be configured to have a detachable type structure in which the secondary batteries can be easily inserted into and removed from the devices or an embedded type structure in which the secondary batteries are embedded in the devices.
  • secondary batteries used in conventional mobile devices may be configured to have a detachable type structure in which the secondary batteries can be inserted into or removed from the mobile devices as needed.
  • secondary batteries used in other devices such as some mobile phones, tablet personal computers (PCs), and smart pads, may be configured to have an embedded type structure.
  • a secondary battery includes anode and cathode terminals electrically connected to a device in which the secondary battery is mounted and a safety element to effectively control an abnormal state of the secondary battery, such as overcharge of the secondary battery or overcurrent in the secondary battery.
  • the safety element may include a positive temperature coefficient (PTC) element and a protection circuit module (PCM).
  • an embedded type secondary battery pack uses a plate-shaped battery cell, which is suitable for electrical connection, and a safety element, such as a PCM, is connected to a battery cell including anode and cathode terminals via a conductive nickel plate by welding or soldering.
  • a safety element such as a PCM
  • the anode and cathode terminals contact anode and cathode terminal parts of the PCM such that the anode and cathode terminals are electrically connected to an external input and output terminal formed at the PCM.
  • a connector is electrically connected to the external input and output terminal.
  • Prior art documents US2013/034752 EP2 506 338 and EP2 207 222 disclose similar terminal arrangements.
  • the connector In a conventional secondary battery pack, the connector is connected to a device in a state in which the connector protrudes outward from the battery pack. For this reason, it is necessary to provide the interior of the device with an additional space in which the connector will be located although a space necessary to form the connector is present in the battery pack.
  • the present invention has been made to solve the above problems, and other technical problems that have yet to be resolved.
  • a secondary battery pack configured to have a structure in which a connector is formed on a protection circuit module (PCM) such that the connector does not protrude outward from the secondary battery pack, thereby preventing generation of a dead space in a device, in which the secondary battery pack is mounted, due to the connector and reducing manufacturing cost.
  • PCM protection circuit module
  • the disclosed secondary battery pack includes a battery cell having a cathode terminal and an anode terminal formed on one surface including a sealed portion to seal the battery cell and a protection circuit module (PCM) including a protection circuit board (PCB) having a protection circuit formed thereon, an external input and output terminal electrically connected to the protection circuit, a connector electrically connected to the external input and output terminal, and an electrically insulative PCM case in which the PCB is mounted, wherein the PCM is loaded on the sealed portion in a state in which the PCM is electrically connected to the battery cell and the connector is formed on the PCM such that the connector does not protrude outward from the secondary battery pack.
  • PCM protection circuit module
  • PCB protection circuit board
  • the secondary battery pack according to the present invention is configured to have a structure in which the connector is formed on the PCM such that the connector does not protrude outward from the battery pack. Consequently, it is possible to minimize a space defined in a device, in which the connector will be mounted. In addition, a flexible board extending between the PCM and the connector is removed. Consequently, it is possible to reduce manufacturing cost.
  • the cathode terminal and the anode terminal of the battery cell may be electrically connected to the PCB and the external input and output terminal may be formed on the PCB such that the external input and output terminal is electrically connected to the cathode terminal and the anode terminal of the battery cell.
  • the connector may be directly coupled to the external input and output terminal without using an additional member, thereby achieving electrical connection from the cathode terminal and the anode terminal of the battery cell to the connector via the PCB and the external input and output terminal.
  • an electrical connection member may be interposed between the external input and output terminal and the connector to achieve electrical connection between the external input and output terminal and the connector.
  • the electrical connection member may be a flexible printed circuit board (FPCB).
  • FPCB flexible printed circuit board
  • the present invention is not limited thereto. Even in this case, the connector is disposed on the PCM such that the connector does not protrude outward from the secondary battery pack. Consequently, this structure is differentiated from a conventional structure.
  • the PCM case may be provided with an opening, through which the connector is exposed outward.
  • the PCM case may include a first case member and a second case member coupled to each other while surrounding the PCB.
  • the second case member may be configured to have a box structure open at one surface thereof such that the PCM is inserted and mounted in the second case member and the first case member may be provided at one side thereof with an opening, through which the connector is exposed.
  • the PCB may be provided at one surface thereof with the external input and output terminal and at the other surface thereof with an anode terminal connection part and a cathode terminal connection part corresponding to the anode terminal and the cathode terminal, respectively.
  • a nickel plate may be further mounted at a top of the cathode terminal to be coupled to the cathode terminal connection part by ultrasonic welding.
  • a safety element may be further mounted at an electrical connection region between one of the electrode terminals of the battery cell and the PCB.
  • the safety element may be a positive temperature coefficient (PTC) element or a fuse.
  • PTC positive temperature coefficient
  • the present invention is not limited thereto.
  • the secondary battery pack according to the present invention may be configured to have a structure in which a label is attached to the battery cell and the PCM excluding the connector in a wrapping fashion.
  • the label may be configured to have a structure that is capable of wrapping a thermally bonded outer circumferential surface of the battery cell and the PCM excluding the connector.
  • the battery cell may be a secondary battery having an electrode assembly of a cathode/separator/anode structure received in a battery case made of a laminate sheet comprising a metal layer and a resin layer in a sealed state.
  • a protection circuit module mounted at a sealed portion of a plate-shaped battery cell having a cathode terminal and an anode terminal, each of which is made of a plate-shaped conductive member, formed at an upper end thereof, the PCM including a PCB having a protection circuit formed thereon, an external input and output terminal electrically connected to the protection circuit, a connector electrically connected to the external input and output terminal, and an electrically insulative PCM case in which the PCB is mounted, wherein the PCB is electrically connected to the cathode terminal and the anode terminal of the battery cell and the connector is mounted at the external input and output terminal such that the connector does not protrude outward from the PCM case.
  • PCM protection circuit module
  • the connector may be directly coupled to the external input and output terminal. According to circumstances, an electrical connection member may be interposed between the external input and output terminal and the connector to achieve electrical connection between the external input and output terminal and the connector.
  • the PCM case may be provided with an opening, through which the connector is exposed outward.
  • a device including the secondary battery pack as defined in the claims.
  • Examples of the device may include a mobile phone, a mobile computer, a smart phone, a tablet PC, a smart pad, and a netbook computer.
  • the structures and manufacturing methods of the devices are well known in the art to which the present invention pertains and, therefore, a detailed description will be omitted.
  • FIG. 1 is a perspective view typically showing a secondary battery pack 10 according to an embodiment of the present invention and FIG. 2 is an exploded view typically showing the secondary battery pack 10 of FIG. 1 .
  • the secondary battery pack 10 includes a battery cell 100 and a protection circuit module (PCM) 500 including a protection circuit board (PCB) 200, a PCM case 310 and 320, and a connector 400.
  • the secondary battery pack 10 is configured to have a structure in which a label 600 is attached to the battery cell 100 and the PCM 500 excluding the connector 400 in a wrapping fashion and the connector 400 is exposed through an opening 311 of the first case member 310 such that the connector 400 does not protrude outward from the secondary battery pack 10.
  • FIG. 3 is a perspective view typically showing a battery cell according to an embodiment of the present invention
  • FIG. 4 is a perspective view typically showing a PCB, an external input and output terminal, and a connector according to an embodiment of the present invention
  • FIG. 5 is a perspective view typically showing a PCM according to an embodiment of the present invention
  • FIG. 6 is a perspective view typically showing the secondary battery pack of FIG. 1 , from which the label is removed.
  • a sealed portion 110 and a cathode terminal 120 and an anode terminal 130 are formed at the upper end of the battery cell 100.
  • a cathode terminal connection part 220 and an anode terminal connection part 230 respectively corresponding to the cathode terminal 120 and the anode terminal 130 are formed at the top of the PCB 200.
  • the cathode terminal 120 and the anode terminal 130 contact the cathode terminal connection part 220 and the anode terminal connection part 230, respectively, thereby achieving electrical connection between the battery cell 100 and the PCB 200.
  • a safety element (not shown) is further mounted between the anode terminal 130 and the anode terminal connection part 230.
  • the cathode terminal connection part 220 and the anode terminal connection part 230 are electrically connected to an external input and output terminal 210.
  • the connector 400 is mounted at the top of the external input and output terminal 210, thereby achieving electrical connection therebetween.
  • An electrical connection member (not shown) may be interposed between the connector 400 and the external input and output terminal 210.
  • the PCM 500 is configured to have a structure in which the PCB 200 is mounted at the second case member 320 and the first case member 310 is coupled to the upper part of the second case member 320.
  • the opening 311 is formed at the right side of the first case member 310.
  • the connector 400 is exposed through the opening 311 of the first case member 310.
  • the PCM 500 is loaded on the sealed portion of the battery cell 100.
  • a secondary battery pack according to the present invention is configured to have a structure in which a connector is formed on a protection circuit module (PCM) such that the connector does not protrude outward from the battery pack. Consequently, it is possible to minimize a space defined in a device, in which the connector will be mounted. In addition, a flexible board extending between the PCM and the connector is removed. Consequently, it is possible to reduce manufacturing cost.
  • PCM protection circuit module

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Inorganic Chemistry (AREA)
  • Battery Mounting, Suspending (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
EP14800504.4A 2013-05-23 2014-05-22 Secondary battery pack containing connector with non-projecting structure Active EP3001483B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020130058099A KR101671371B1 (ko) 2013-05-23 2013-05-23 비돌출 구조의 커넥터를 포함하고 있는 이차전지 팩
PCT/KR2014/004563 WO2014189299A1 (ko) 2013-05-23 2014-05-22 비돌출 구조의 커넥터를 포함하고 있는 이차전지 팩

Publications (3)

Publication Number Publication Date
EP3001483A1 EP3001483A1 (en) 2016-03-30
EP3001483A4 EP3001483A4 (en) 2016-05-25
EP3001483B1 true EP3001483B1 (en) 2018-02-07

Family

ID=51933795

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14800504.4A Active EP3001483B1 (en) 2013-05-23 2014-05-22 Secondary battery pack containing connector with non-projecting structure

Country Status (8)

Country Link
US (1) US9660302B2 (ja)
EP (1) EP3001483B1 (ja)
JP (1) JP6254192B2 (ja)
KR (1) KR101671371B1 (ja)
CN (1) CN104969383B (ja)
BR (1) BR112015018229B8 (ja)
TW (1) TWI525884B (ja)
WO (1) WO2014189299A1 (ja)

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USD751984S1 (en) * 2014-09-22 2016-03-22 Limefuel, LLC Rechargeable battery device
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USD751981S1 (en) * 2014-09-22 2016-03-22 Limefuel, LLC Rechargeable battery device
USD780112S1 (en) 2015-02-18 2017-02-28 Limefuel, LLC Rechargeable battery device
USD788698S1 (en) 2015-02-18 2017-06-06 Limefuel, LLC Rechargeable battery device
USD815032S1 (en) 2015-02-20 2018-04-10 Limefuel, LLC Rechargeable battery device
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CN106816560B (zh) * 2017-02-28 2019-06-28 安徽江淮汽车集团股份有限公司 汽车动力电池箱体
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KR102168675B1 (ko) 2017-09-28 2020-10-21 주식회사 엘지화학 보호회로모듈을 구비한 파우치형 이차전지 팩
CN108206247B (zh) * 2017-10-20 2021-05-11 西安中兴新软件有限责任公司 一种电芯、电子设备和电芯的封装方法
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Also Published As

Publication number Publication date
KR20140137542A (ko) 2014-12-03
BR112015018229B1 (pt) 2021-08-24
CN104969383A (zh) 2015-10-07
TW201523981A (zh) 2015-06-16
US20160072154A1 (en) 2016-03-10
JP2016503229A (ja) 2016-02-01
EP3001483A4 (en) 2016-05-25
KR101671371B1 (ko) 2016-11-01
BR112015018229A2 (pt) 2017-07-18
JP6254192B2 (ja) 2017-12-27
BR112015018229B8 (pt) 2023-01-17
EP3001483A1 (en) 2016-03-30
CN104969383B (zh) 2018-05-04
WO2014189299A1 (ko) 2014-11-27
TWI525884B (zh) 2016-03-11
US9660302B2 (en) 2017-05-23

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